
Red_Size = 1.5;

color("gray")
cylinder(h = 0.1, r1 = 2,r2 = 2,$fn = 50);
translate([0,0,0.1]

)
difference(){
    color("red")
    cylinder(h = 0.1, r1 = 1.9,r2 = 1.9,$fn = 50);
    cylinder(h = 0.2, r1 = 1.5,r2 = 1.5,$fn = 50);

}

translate([0,0,0.09])
difference(){
    color("white")
    cylinder(h = 0.1, r1 = 2,r2 = 2,$fn = 50);
    cylinder(h = 0.2, r1 = 1.9,r2 = 1.9,$fn = 50);
}

color("white")
translate([0,0,0.09])
cylinder(h = 0.1, r1 = 1.5,r2 = 1.5,$fn = 50);
